Ohaus DISCOVERY SEMI-MICRO AND ANALYTICAL BALANCES Manual - Manual (Page 36)

EN-32 Ohaus Discovery
Automatic Internal Calibration
Before Automatic Internal calaibration can be used, it must be turned on first in Menu Calibrate.
With the balance on, press and hold the Cal button until MENU CALIBRATE is displayed, then
release the Cal button, CALIBRATE is (blinking).
Press the Yes button to enter calibration, CAL AUTO CAL is displayed.
Press the Yes button to select Autocal. After pressing the Yes button, AUTOCAL SET OFF is dis-
played.
Pressing the No button will change the display to AUTOCAL SET ON, then press the Yes button.
With Autocal set on, exit the Calibrate Menu. The balance may now be calibrated automatically
from the weighing mode.
Internal calibration can be accomplished without using an external weight. With the balance on,
press the Cal button, balance begins to calibrate.
Press Exit to abort calibration. When internal calibration is finished, the balance returns to the cur-
rently selected mode.
Automatic internal calibration is a feature included with all Discovery models. AutoCal will au-
tomatically calibrate the balance each time a change in temperature significant enough to affect
accuracy, or after every 11 hours.
Span Calibration
With the balance on, press and hold the Cal button, CALIBRATE (blinking) is displayed.
Press the Yes button to enter calibration.
Press the No button at AutoCal.
Press the Yes button to initiate span calibration.
First the zero reading is taken. Next the display shows the default span calibration weight value.
Press No to change to an alternate calibration weight. Press Yes when the desired calibration
weight is displayed.
Place the specified calibration weight on the pan. After calibration, remove the weight from the
pan.
To abort calibration at any time, press the Exit button.
3.7.2 Calibration (Cont.)